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New Sesquiterpene Lactones and Other Constituents from Centaurea paui
Author(s) -
Cardona Luz,
García Begoña,
Muñoz M. Carmen,
Navarro Francisca I.,
Pedro José R.
Publication year - 1997
Publication title -
liebigs annalen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 0947-3440
DOI - 10.1002/jlac.199719970313
Subject(s) - sesquiterpene , chemistry , derivative (finance) , stereochemistry , sesquiterpene lactone , terpene , organic chemistry , financial economics , economics
Aerial parts of Centaurea paui afforded, in addition to several known sesquiterpene lactones, the two new elemanolides 2–4 , the new elemane derivative 5 as well as the five new heliangolides 14–18 . Their structures were elucidated by spectroscopic methods, especially high‐field NMR spectroscopy. The structure of the heliangolide 12 previously isolated from this plant, has been confirmed by X‐ray diffraction.